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Strict extensions in pointfree topology
Extensions of spaces have been constructed and used since the 19th century, for example, to form the complex sphere from the complex plane by adding a point at in nity. Once topological spaces were invented in the 20th century, completions and compactications became important examples of extensions....
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| Format: | Thesis |
| Language: | English |
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Department of Mathematics and Applied Mathematics
2014
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| _version_ | 1867613284204544000 |
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| access_status_str | Open Access |
| author | Apfel, Gayle Renay |
| author2 | Schauerte, Anneliese |
| author_browse | Apfel, Gayle Renay Schauerte, Anneliese |
| author_facet | Schauerte, Anneliese Apfel, Gayle Renay |
| author_sort | Apfel, Gayle Renay |
| collection | Thesis |
| description | Extensions of spaces have been constructed and used since the 19th century, for example, to form the complex sphere from the complex plane by adding a point at in nity. Once topological spaces were invented in the 20th century, completions and compactications became important examples of extensions. Banaschewski wrote that extension problems have a """"philosophical charm"""" in that they seem to ask the question: """"What possibilities in the unknown are determined by the known?"""" Strict extensions were first defined for topological spaces by Stone. The idea was initially translated into the pointfree setting by Hong, and has since been extensively studied. Just recently, interest has been shown in studying strict extensions in the asymmetric setting of biframes, for example, by Frith and Schauerte. The intention of this dissertation is to provide a systematic and detailed exposition of strict extensions of frames and nearness frames, which can be used as a reference on this topic. For instance, someone interested in pursuing strict extensions of biframes might obtain the relevant background from reading this text, although the topic of strict extensions of biframes itself will not be discussed here. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/6621 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:33:41.762Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Mathematics and Applied Mathematics |
| publisherStr | Department of Mathematics and Applied Mathematics |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/6621 Strict extensions in pointfree topology Apfel, Gayle Renay Schauerte, Anneliese Künzi, Hans-Peter A Extensions of spaces have been constructed and used since the 19th century, for example, to form the complex sphere from the complex plane by adding a point at in nity. Once topological spaces were invented in the 20th century, completions and compactications became important examples of extensions. Banaschewski wrote that extension problems have a """"philosophical charm"""" in that they seem to ask the question: """"What possibilities in the unknown are determined by the known?"""" Strict extensions were first defined for topological spaces by Stone. The idea was initially translated into the pointfree setting by Hong, and has since been extensively studied. Just recently, interest has been shown in studying strict extensions in the asymmetric setting of biframes, for example, by Frith and Schauerte. The intention of this dissertation is to provide a systematic and detailed exposition of strict extensions of frames and nearness frames, which can be used as a reference on this topic. For instance, someone interested in pursuing strict extensions of biframes might obtain the relevant background from reading this text, although the topic of strict extensions of biframes itself will not be discussed here. 2014-08-20T19:14:49Z 2014-08-20T19:14:49Z 2013 Master Thesis Masters MSc http://hdl.handle.net/11427/6621 eng application/pdf Department of Mathematics and Applied Mathematics Faculty of Science University of Cape Town |
| spellingShingle | Apfel, Gayle Renay Strict extensions in pointfree topology |
| thesis_degree_str | Master's |
| title | Strict extensions in pointfree topology |
| title_full | Strict extensions in pointfree topology |
| title_fullStr | Strict extensions in pointfree topology |
| title_full_unstemmed | Strict extensions in pointfree topology |
| title_short | Strict extensions in pointfree topology |
| title_sort | strict extensions in pointfree topology |
| url | http://hdl.handle.net/11427/6621 |
| work_keys_str_mv | AT apfelgaylerenay strictextensionsinpointfreetopology |